In this role-blurring piece by Apple Store hacker Kyle McDonald and MAKE palMatt Mets, the user/subject closes their eyes and rests their forearm on a moving platform that guides a pen held in their hand to draw a self-portrait. The machine uses computer vision to generate a line drawing that is then fed to the platform, which was supposedly custom-built using a cannibalized xy platform from a Thing-O-Matic. [Thanks, Jon!]